Whakaoti i te 71/2div1*2-{12*(1/3-03)-3/20}

$$7 \frac { 1 } { 2 } \div 1 \cdot 2 - \{ 12 \times ( \frac { 1 } { 3 } - 03 ) - \frac { 3 } { 20 } \}$$

Aromātai

$$\frac{223}{20}=11.15$$

Ngā Upane Otinga

Whakareatia te 7 ki te 2, ka 14.

$$\frac{\frac{14+1}{2}}{1}\times 2-\left(12\left(\frac{1}{3}-0\times 3\right)-\frac{3}{20}\right)$$

Tāpirihia te 14 ki te 1, ka 15.

$$\frac{\frac{15}{2}}{1}\times 2-\left(12\left(\frac{1}{3}-0\times 3\right)-\frac{3}{20}\right)$$

Ka whakawehea he tau ki te tahi, hua ai ko ia anō.

$$\frac{15}{2}\times 2-\left(12\left(\frac{1}{3}-0\times 3\right)-\frac{3}{20}\right)$$

Me whakakore te 2 me te 2.

$$15-\left(12\left(\frac{1}{3}-0\times 3\right)-\frac{3}{20}\right)$$

Whakareatia te 0 ki te 3, ka 0.

$$15-\left(12\left(\frac{1}{3}-0\right)-\frac{3}{20}\right)$$

Tangohia te 0 i te \frac{1}{3}, ka \frac{1}{3}.

$$15-\left(12\times \frac{1}{3}-\frac{3}{20}\right)$$

Whakareatia te 12 ki te \frac{1}{3}, ka \frac{12}{3}.

$$15-\left(\frac{12}{3}-\frac{3}{20}\right)$$

Whakawehea te 12 ki te 3, kia riro ko 4.

$$15-\left(4-\frac{3}{20}\right)$$

Me tahuri te 4 ki te hautau \frac{80}{20}.

$$15-\left(\frac{80}{20}-\frac{3}{20}\right)$$

Tā te mea he rite te tauraro o \frac{80}{20} me \frac{3}{20}, me tango rāua mā te tango i ō raua taurunga.

$$15-\frac{80-3}{20}$$

Tangohia te 3 i te 80, ka 77.

$$15-\frac{77}{20}$$

Me tahuri te 15 ki te hautau \frac{300}{20}.

$$\frac{300}{20}-\frac{77}{20}$$

Tā te mea he rite te tauraro o \frac{300}{20} me \frac{77}{20}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{300-77}{20}$$

Tangohia te 77 i te 300, ka 223.

$$\frac{223}{20}$$

Tauwehe

$$\frac{223}{2 ^ {2} \cdot 5} = 11\frac{3}{20} = 11.15$$